A cross shaped pattern is made by arranging for identical rectangles around the sides of a square. The area of the square is 36 cm squared. The area of each triangle is one and a third times the area of the square. Find the perimeter of the cross shaped pattern

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.